Repeating alarm-clock.



No. 809,133. PATENTED JAN. 2, 1906. W. E. PORTER.

RBPEATING ALARM CLOCK.

APPLICATION FILED APB.17, 1902.

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WITNESSES IN VENTOR 1%, (13M azpmwv fgwfi @411 L ATTOHNE m No. 809,133.PATENTED JAN. 2, 1906. W. B. PORTER.

REPEATING ALARM CLOCK.

APPLICATION FILED APR.17, 1902.

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WVILSON E. PORTER. OF NEIV HAVEN, CONNECTICUT, ASSIGNOR TO THE NEW HAVENCLOCK COMPANY, OF NEW HAVEN, CONNECTICUT, A

REPEATING ALARM-CLOCK.

Specification of Letters Patent.

Patented Jan. 2, 1906.

Application filed April 1'7, 1902. Serial No. 103,381.

To all whmn it may concern:

Be it known that I, WILsON E. PORTER, of the city and county of NewHaven, State of Connecticut, have invented a new and useful Improvementin Repeating Alarm-Clocks, of which the following is a full, clear, andeX- act description when taken in connection with the accompanyingdrawings, which form a part thereof, and in which Figure 1 represents afront view of a clock embodying my invention, the dial-plate and casehaving been removed Figs. 2 and 3, vertical sections on line 2 2 of Fig.4, the parts beingshown in different positions; Fig. 4, a plan view;Fig. 5, a transverse vertical section on line 5 5 of Fig. 4 Figs. 6 and7, corresponding views to Figs. 4 and 5 of the spring alarm-lever andassociated parts in different positions; Figs. 8 and 9, perspectivedetail views of the spring alarm-lever engaging and disengaging thechecking-lever and repeating alarm-lever, respectively; and Fig. 10, asimilar View to Fig. 2 with the parts in diflerent positions.

In all figures similar letters of reference represent like parts.

This invention relates to alarm-clocks, and more particularly to thatclass in which the alarm is sounded intermittently or repeated atintervals. In this class of alarm-clocks the alarm is sounded, thenchecked for a certain regulated period, and then is sounded again, t 1eoperation being repeated until the alarm runs down or is positively shutoff, which latter requires some action on the part of the person forwhom it is sounded. The intermittent checking is accomplished bymechanism operated by the timetrain, and it is one of the objects of thepresent invention to disengage the checking mechanism from thetime-train eXcept during the time when the alarm is otherwise releasedto erence may be made for a more detailed description of the operationof the alarm mechanism described herein.

Referring to the drawings for a more particular description, the partsdesignated by the letters A, A, and A represent the plates upon whichthe movement is mounted, and a pillars connecting the same.

B represents the spring for the alarm, and 11;, I), and b the train ofwheels driven therey- C is an escapement-wheel mounted on. the shaft ofgear b and D is a verge coacting therewith. The verge D is mounted on arotary shaft d, on which are also mounted a wire 6, carrying the hammerE, and the checking-lever E.

A detailed description of the time-train is omitted, as it may embodyany suitable construction. It is only necessary to refer particularly tothe dial-wheels, which are desig nated by F and F, and to one of thewheels (herein shown as the third wheel) of the timetrain marked G, onthe shaft 9 of which is a ratchet H.

I is a repeating alarm-lever, shown mounted on the plate A and havingone end normally pressed into engagement with the ratchet H by a springh. The lever I when rocked on its pivot by the successive projectingteeth of the ratchet H alternately engages and disengages thechecking-lever E of the alarm.

7c is a rotatable shaft, on which is loosely mounted a gear L meshingwith the dial or hour wheel F. The shaft 7c is provided with a lateralpin K, against which a cam-shoulder Z on the face of the gear L is heldin contact by a spring alarm-lever M. In the cam Zis a notch Z and onone side of the notch an inclined surface Z so that upon the rotation ofthe gear L and cam Z when the pin K comes opposite to the notch Z thegear L and alarmlever M will be moved by the resiliency of the lever Moutward from the movement-plate A, while upon the further rotation ofthe cam Z when the pin K travels upon the inclined surface Z the gear Land spring alarm-lever M will be forced inward toward the movement-plate A.

The checking-lever E is adapted to be engaged by an arm N on the springalarm-lever IOO M when the latter is in its inward position, (see Figs.6, 7, 9, and 10,) and is disengaged upon the outward movement of thelever M and its arm N, Figs. 4, 5, and 8, so that the checking-lever andhammer may vibrate under the action of the verge. A second arm N on thealarm-lever M is provided with a chamfered surface n, which upon theinward movement of the arm with the alarm-lever M bears upon therepeating alarm-lever I to force it from engagement with the ratchet H.(See Figs. 6, 7, 9, and 10.) As the movement of both arms N and N aresimultaneous, the ratchet H and time-train are relieved from acting uponthe lever I, except at such times as the alarm is free to sound by thedisengagement of the checking-lever E from the arm N, On the reversemovement the arm N is drawn away from the repeating alarm-lever I, sothat the surface n will not bear on the lever, but the latter will befree to swing against the ratchet H and vibrate under its impetus, Figs.4, 5, and 8.

The operation of the device is as follows: The shaft 7c is turned, bymeans of a button 7c or other means, until its indicator or hand 0points to the desired hour for sounding the alarm. Until this time isreached the pin K of the shaft 76 rides upon the even surface or edge ofthe cam Z as the latter is rotated by the hour-wheel, when (at theappointed hour) the notch Z is brought into alinement with the pin K,the spring alarm-lever is allowed to move outward to release thechecking-lever E and the repeating alarm-lever I from engagement by thearms N and N, respectively. Upon the release of the repeatingalarm-lever I the spring h forces it into engagement with the ratchet H.The alarm is sounded except when by the rotation of the ratchet H therepeating alarm-lever I intermittently engages and disengages thechecking-lever E. This continues until the alarm runs down or is shutoff. The continued rotation of the gear L brings the pin K against theinclined surface Z of the cam Z, when the spring alarm-lever M is forcedinward, so that one arm N engages the checking-lever to prevent thefurther sounding of the alarm, and the other arm N engages the repeatingalarm-lever I to swing it out of engagement with the ratchet H.

Having now described my invention, (which may vary in its detailswithout departing from the spirit thereof,) what I claim, and desire tosecure by Letters Patent, is

1. In a repeating alarmclock, the combination with the time-train of analarm-train an alarm-checking lever; a repeating alarmlever normallyyieldingly engaging said alarm-checking lever; a device operated by thetime-train to intermittently release said repeating alarm-lever fromengagement with repeating alarm-lever from said releasing device,substantially as described.

2. In a repeating alarm-clock, the combination with the time-train of analarm-train an alarm-checking lever; a repeating alarmlever normallyyieldingly engaging said alarm-checking lever; a device operated by thetime-train to intermittently release said repeating alarm-lever fromengagement with said alarm-checking lever; and mechanism forsimultaneously disengaging the repeating alarmlever from said releasingdevice, and engaging said alarm-checking lever to check the alarm-train,substantially as described.

3. In a repeating alarm-clock, the combination with the time-train of analarm-train an alarm-checking lever; a repeating alarmlever normallyyieldingly engaging said alarm-checking lever; a device operated by thetime-train to intermittently release said repeating alarm-lever fromengagement with said alarm-checking lever; and mechanism operated by thetime-train for disengaging the repeating alarm-lever from said releasingdevice except when the alarm-train is released, substantially asdescribed.

4. In a repeatingalarm-clock, the combination with the time-train of analarm-train; an alarm-checking lever; an alarm-lever adapted to engagesaid alarm-checking lever and operated by the time-train to periodically release the alarm-checking lever; a repeating alarm-lever normallyyieldingly engaging said alarm-ehecking lever; a device operated by thetime-train to intermittently release saidrepeating alarm-lever fromengagement with said alarm-checking lever, said repeating alarm-leverbeing disengaged from said releasing device by said alarni-lever whenthe latter is in engagement with said alarm-checking lever,substantially as described.

5. In a repeating alarm-clock, the combination with the time-train of analarm-train an alarm-checking lever; a repeating alarmlever normallyyieldingly engaging said alarm-checking lever a device operated by thetime-train to intermittently release said repeating alarm-lever fromengagement with said checking-lever; and an alarm-lever adapted tosimultaneously engage said alarmchecking lever to check the same andsaid Topeating alarm-lever to disengage the latter from said releasingdevice, said alarm-lever being operated by the time-train periodicallyto simultaneously release said alarmchecking lever and said repeatingalarm-lever, substantially as described.

6. In a repeating alarm-clock, the combination with the time-train; ofan alarm-train; an alarm-checking lever; a repeating alarmlever normallyyieldingly engaging said alarm-checking lover; a device operated. by thetime-train to intermittently release said repeating alarm-lever fromengagement with said alarm-checking lever; and mechanism operated by thetime-train for simultaneously disengaging said repeating alarm-leverfrom said releasing device and engaging said alarm-lever, substantiallyas described.

7. In a repeating alarm-clock, the combination With the time-train; ofan alarm-train an alarm-checking lever; a repeating alarmlever normallyyieldingly engaging said alarm-checking lever; a device operated by thetime-train to intermittently release said repeating alarm-lever fromengagement With said alarm-checking lever; a lever operated by thetime-train adapted to disengage said repeating alarm-lever from saidreleasing device, and to periodically release said repeatingalarm-lever, substantially as described.

8. In a clock-movement, the combination With a time-train; ofa leverrocked by said time-train; mechanism adapted to disengage said leverfrom said time-train and operated by said train to periodically releasesaid lever, substantially as described.

9. In a repeating alarm-clock, the combination with the time-train; ofan alarm-train; an alarm-checking lever; a repeating alarmlever normallyyieldingly engaging said alarm-checking lover; a ratchet-wheel operatedby the time-train to intermittently release said repeating alarm-leverfrom engagement with said alarm-checking lever; and a lever operated bythe time-train to disengage said repeating alarm-lever from saidratchet, substantially as described.

In Witness whereof I have hereunto set my hand on the 8th day of April,1902.

WILSON E. PORTER.

WVitnesses:

EUGENE CARTIER, Gnonem NOLIN.

